AS5047P Factsheet

DAEC™ Dynamic Angle
Error Compensation
www.ams.com/AS5047P
AS5047P – High Resolution Rotary Position Sensor
- DAEC™ Dynamic Angle Error Compensation
- 14-bit core resolution
- 12-bit decimal & binary incremental pulse count
- High efficiency in motor & position control
- Immune to external stray magnetic fields
We provide innovative
analog solutions to
the most challenging
applications in sensor
and sensor interfaces,
power management,
and wireless.
General Description
The AS5047P is a high-resolution rotary position sensor for high speed (up to 28krpm)
angle measurement over a full 360-degree range. This new position sensor is equipped
with revolutionary integrated dynamic angle error compensation (DAEC™) with almost
0 latency and offers a robust design that suppresses the influence of any homogenous
external stray magnetic field. A standard 4-wire SPI serial interface allows a host microcontroller to read 14-bit absolute angle position data from the AS5047P and to program
non-volatile settings without a dedicated programmer. Incremental movements are
indicated on a set of ABI signals with a maximum resolution of 4000 steps / 1000 pulses
per revolution in decimal mode and 4096 steps / 1024 pulses per revolution in binary
mode. The resolution of the ABI signal is programmable and can be reduced to 100 steps
per revolution, or 25 pulses per revolution. The AS5047P is available as a single die in a
compact 14-pin TSSOP package.
Benefits
Features
- High speed application
- Easy to use - saving costs on DSP
- High resolution for motor & position control
- Simple optical encoder replacement
- No programmer needed (via SPI command)
- Versatile choice of the interface
- Lower system costs (no shielding)
- Up to 28.000 rpm
- DAEC™ Dynamic angle error compensation
- 14-bit core resolution
-ABI programmable decimal and binary pulse-count:
1000, 500, 400, 300, 200, 100, 50, 25, 1024, 512, 256 ppr
- Zero position, configuration programmable
-Independent output interfaces: SPI, ABI, UVW, PWM
- Immune to external stray field
Applications
DAEC™ Latency Comparison
Supports BLDC motor commutation for the most challenging industrial
applications such as:
- Optical encoder replacement
- Brushless DC motor commutation
- Factory and building automation
-Robotics
- PMSM (permanent magnet synchronous motor)
- Stepper motors closed loop
latency ≈ 0°
No
Compensation
External
Compensation
Integrated
DAEC™
AS5047P Block Diagram
VDD3V3
CSn
SCL
MISO
MOSI
Volatile Memory
SPI
VDD
OTP
LDO
ABI
Hall
Sensors
Analog
Front-End
A/D
AGC
ATAN
(CORDIC)
INTERPOLATOR
Dynamic Angle
Error
Compensation
UWV
A
B
I/PWM
U
V
W / PWM
PWM Decoder
Selectable
on I or W
GND
www.ams.com
[email protected]
© 02/2015 by ams
Subject to change without notice
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ams AG
Tobelbader Strasse 30, 8141 Unterpremstaetten, Austria
Phone +43 3136 500-0 · Fax +43 3136 525-01
Sales Offices Worldwide
[email protected]
[email protected]
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